1B. Schimmelpfennig. Nerve structures in human central corneal epithelium[J] 1982,Graefe’s Archive for Clinical and Experimental Ophthalmology(1):14~20
2Dr A. D. Hoyes,Pauline Barber. Ultrastructure of the corneal nerves in the Rat[J] 1976,Cell and Tissue Research(1):133~144